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        Package&nbsp;tagger ::
        Module&nbsp;extras
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<h1 class="epydoc">Source Code for <a href="tagger.extras-module.html">Module tagger.extras</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno">  1</tt>  <tt class="py-line"><tt class="py-comment"># Copyright (C) 2011 by Alessandro Presta</tt> </tt>
<a name="L2"></a><tt class="py-lineno">  2</tt>  <tt class="py-line"> </tt>
<a name="L3"></a><tt class="py-lineno">  3</tt>  <tt class="py-line"><tt class="py-comment"># Permission is hereby granted, free of charge, to any person obtaining a copy</tt> </tt>
<a name="L4"></a><tt class="py-lineno">  4</tt>  <tt class="py-line"><tt class="py-comment"># of this software and associated documentation files (the "Software"), to deal</tt> </tt>
<a name="L5"></a><tt class="py-lineno">  5</tt>  <tt class="py-line"><tt class="py-comment"># in the Software without restriction, including without limitation the rights</tt> </tt>
<a name="L6"></a><tt class="py-lineno">  6</tt>  <tt class="py-line"><tt class="py-comment"># to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</tt> </tt>
<a name="L7"></a><tt class="py-lineno">  7</tt>  <tt class="py-line"><tt class="py-comment"># copies of the Software, and to permit persons to whom the Software is</tt> </tt>
<a name="L8"></a><tt class="py-lineno">  8</tt>  <tt class="py-line"><tt class="py-comment"># furnished to do so, subject to the following conditions:</tt> </tt>
<a name="L9"></a><tt class="py-lineno">  9</tt>  <tt class="py-line"> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt>  <tt class="py-line"><tt class="py-comment"># The above copyright notice and this permission notice shall be included in</tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt>  <tt class="py-line"><tt class="py-comment"># all copies or substantial portions of the Software.</tt> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt>  <tt class="py-line"> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt>  <tt class="py-line"><tt class="py-comment"># THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</tt> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt>  <tt class="py-line"><tt class="py-comment"># IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</tt> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt>  <tt class="py-line"><tt class="py-comment"># FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</tt> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt>  <tt class="py-line"><tt class="py-comment"># AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</tt> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt>  <tt class="py-line"><tt class="py-comment"># LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</tt> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt>  <tt class="py-line"><tt class="py-comment"># OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN</tt> </tt>
<a name="L19"></a><tt class="py-lineno"> 19</tt>  <tt class="py-line"><tt class="py-comment"># THE SOFTWARE</tt> </tt>
<a name="L20"></a><tt class="py-lineno"> 20</tt>  <tt class="py-line"> </tt>
<a name="L21"></a><tt class="py-lineno"> 21</tt>  <tt class="py-line"> </tt>
<a name="L22"></a><tt class="py-lineno"> 22</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-0" class="py-name" targets="Module tagger.tagger=tagger.tagger-module.html"><a title="tagger.tagger" class="py-name" href="#" onclick="return doclink('link-0', 'tagger', 'link-0');">tagger</a></tt> <tt class="py-keyword">import</tt> <tt class="py-op">*</tt> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt>  <tt class="py-line"> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt>  <tt class="py-line"> </tt>
<a name="UnicodeReader"></a><div id="UnicodeReader-def"><a name="L25"></a><tt class="py-lineno"> 25</tt> <a class="py-toggle" href="#" id="UnicodeReader-toggle" onclick="return toggle('UnicodeReader');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="tagger.extras.UnicodeReader-class.html">UnicodeReader</a><tt class="py-op">(</tt><tt class="py-base-class">Reader</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="UnicodeReader-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="UnicodeReader-expanded"><a name="L26"></a><tt class="py-lineno"> 26</tt>  <tt class="py-line">    <tt class="py-docstring">'''</tt> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt>  <tt class="py-line"><tt class="py-docstring">    Reader subclass that converts Unicode strings to a close ASCII</tt> </tt>
<a name="L28"></a><tt class="py-lineno"> 28</tt>  <tt class="py-line"><tt class="py-docstring">    representation</tt> </tt>
<a name="L29"></a><tt class="py-lineno"> 29</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L30"></a><tt class="py-lineno"> 30</tt>  <tt class="py-line"> </tt>
<a name="UnicodeReader.__call__"></a><div id="UnicodeReader.__call__-def"><a name="L31"></a><tt class="py-lineno"> 31</tt> <a class="py-toggle" href="#" id="UnicodeReader.__call__-toggle" onclick="return toggle('UnicodeReader.__call__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="tagger.extras.UnicodeReader-class.html#__call__">__call__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">text</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="UnicodeReader.__call__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="UnicodeReader.__call__-expanded"><a name="L32"></a><tt class="py-lineno"> 32</tt>  <tt class="py-line">        <tt class="py-keyword">import</tt> <tt class="py-name">unicodedata</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt>  <tt class="py-line">         </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt>  <tt class="py-line">        <tt class="py-name">text</tt> <tt class="py-op">=</tt> <tt class="py-name">unicodedata</tt><tt class="py-op">.</tt><tt class="py-name">normalize</tt><tt class="py-op">(</tt><tt class="py-string">'NFKD'</tt><tt class="py-op">,</tt> <tt class="py-name">text</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">encode</tt><tt class="py-op">(</tt><tt class="py-string">'ascii'</tt><tt class="py-op">,</tt> <tt class="py-string">'ignore'</tt><tt class="py-op">)</tt> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt id="link-1" class="py-name" targets="Class tagger.tagger.Reader=tagger.tagger.Reader-class.html"><a title="tagger.tagger.Reader" class="py-name" href="#" onclick="return doclink('link-1', 'Reader', 'link-1');">Reader</a></tt><tt class="py-op">.</tt><tt id="link-2" class="py-name" targets="Method tagger.extras.HTMLReader.__call__()=tagger.extras.HTMLReader-class.html#__call__,Method tagger.extras.NaiveRater.__call__()=tagger.extras.NaiveRater-class.html#__call__,Method tagger.extras.SimpleReader.__call__()=tagger.extras.SimpleReader-class.html#__call__,Method tagger.extras.UnicodeReader.__call__()=tagger.extras.UnicodeReader-class.html#__call__,Method tagger.tagger.Rater.__call__()=tagger.tagger.Rater-class.html#__call__,Method tagger.tagger.Reader.__call__()=tagger.tagger.Reader-class.html#__call__,Method tagger.tagger.Stemmer.__call__()=tagger.tagger.Stemmer-class.html#__call__,Method tagger.tagger.Tagger.__call__()=tagger.tagger.Tagger-class.html#__call__"><a title="tagger.extras.HTMLReader.__call__
tagger.extras.NaiveRater.__call__
tagger.extras.SimpleReader.__call__
tagger.extras.UnicodeReader.__call__
tagger.tagger.Rater.__call__
tagger.tagger.Reader.__call__
tagger.tagger.Stemmer.__call__
tagger.tagger.Tagger.__call__" class="py-name" href="#" onclick="return doclink('link-2', '__call__', 'link-2');">__call__</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">text</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L36"></a><tt class="py-lineno"> 36</tt>  <tt class="py-line"> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt>  <tt class="py-line"> </tt>
<a name="HTMLReader"></a><div id="HTMLReader-def"><a name="L38"></a><tt class="py-lineno"> 38</tt> <a class="py-toggle" href="#" id="HTMLReader-toggle" onclick="return toggle('HTMLReader');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="tagger.extras.HTMLReader-class.html">HTMLReader</a><tt class="py-op">(</tt><tt class="py-base-class">UnicodeReader</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="HTMLReader-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="HTMLReader-expanded"><a name="L39"></a><tt class="py-lineno"> 39</tt>  <tt class="py-line">    <tt class="py-docstring">'''</tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt>  <tt class="py-line"><tt class="py-docstring">    Reader subclass that can parse HTML code from the input</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt>  <tt class="py-line"> </tt>
<a name="HTMLReader.__call__"></a><div id="HTMLReader.__call__-def"><a name="L43"></a><tt class="py-lineno"> 43</tt> <a class="py-toggle" href="#" id="HTMLReader.__call__-toggle" onclick="return toggle('HTMLReader.__call__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="tagger.extras.HTMLReader-class.html#__call__">__call__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">html</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="HTMLReader.__call__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="HTMLReader.__call__-expanded"><a name="L44"></a><tt class="py-lineno"> 44</tt>  <tt class="py-line">        <tt class="py-keyword">import</tt> <tt class="py-name">lxml</tt><tt class="py-op">.</tt><tt class="py-name">html</tt> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt>  <tt class="py-line"> </tt>
<a name="L46"></a><tt class="py-lineno"> 46</tt>  <tt class="py-line">        <tt class="py-name">text</tt> <tt class="py-op">=</tt> <tt class="py-name">lxml</tt><tt class="py-op">.</tt><tt class="py-name">html</tt><tt class="py-op">.</tt><tt class="py-name">fromstring</tt><tt class="py-op">(</tt><tt class="py-name">html</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">text_content</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L47"></a><tt class="py-lineno"> 47</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">isinstance</tt><tt class="py-op">(</tt><tt class="py-name">text</tt><tt class="py-op">,</tt> <tt class="py-name">unicode</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L48"></a><tt class="py-lineno"> 48</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt id="link-3" class="py-name" targets="Class tagger.extras.UnicodeReader=tagger.extras.UnicodeReader-class.html"><a title="tagger.extras.UnicodeReader" class="py-name" href="#" onclick="return doclink('link-3', 'UnicodeReader', 'link-3');">UnicodeReader</a></tt><tt class="py-op">.</tt><tt id="link-4" class="py-name"><a title="tagger.extras.HTMLReader.__call__
tagger.extras.NaiveRater.__call__
tagger.extras.SimpleReader.__call__
tagger.extras.UnicodeReader.__call__
tagger.tagger.Rater.__call__
tagger.tagger.Reader.__call__
tagger.tagger.Stemmer.__call__
tagger.tagger.Tagger.__call__" class="py-name" href="#" onclick="return doclink('link-4', '__call__', 'link-2');">__call__</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">text</tt><tt class="py-op">)</tt> </tt>
<a name="L49"></a><tt class="py-lineno"> 49</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L50"></a><tt class="py-lineno"> 50</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt id="link-5" class="py-name"><a title="tagger.tagger.Reader" class="py-name" href="#" onclick="return doclink('link-5', 'Reader', 'link-1');">Reader</a></tt><tt class="py-op">.</tt><tt id="link-6" class="py-name"><a title="tagger.extras.HTMLReader.__call__
tagger.extras.NaiveRater.__call__
tagger.extras.SimpleReader.__call__
tagger.extras.UnicodeReader.__call__
tagger.tagger.Rater.__call__
tagger.tagger.Reader.__call__
tagger.tagger.Stemmer.__call__
tagger.tagger.Tagger.__call__" class="py-name" href="#" onclick="return doclink('link-6', '__call__', 'link-2');">__call__</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">text</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L51"></a><tt class="py-lineno"> 51</tt>  <tt class="py-line"> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt>  <tt class="py-line">     </tt>
<a name="SimpleReader"></a><div id="SimpleReader-def"><a name="L53"></a><tt class="py-lineno"> 53</tt> <a class="py-toggle" href="#" id="SimpleReader-toggle" onclick="return toggle('SimpleReader');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="tagger.extras.SimpleReader-class.html">SimpleReader</a><tt class="py-op">(</tt><tt class="py-base-class">Reader</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SimpleReader-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="SimpleReader-expanded"><a name="L54"></a><tt class="py-lineno"> 54</tt>  <tt class="py-line">    <tt class="py-docstring">'''</tt> </tt>
<a name="L55"></a><tt class="py-lineno"> 55</tt>  <tt class="py-line"><tt class="py-docstring">    Reader subclass that doesn't perform any advanced analysis of the text</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt>  <tt class="py-line">     </tt>
<a name="SimpleReader.__call__"></a><div id="SimpleReader.__call__-def"><a name="L58"></a><tt class="py-lineno"> 58</tt> <a class="py-toggle" href="#" id="SimpleReader.__call__-toggle" onclick="return toggle('SimpleReader.__call__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="tagger.extras.SimpleReader-class.html#__call__">__call__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">text</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="SimpleReader.__call__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="SimpleReader.__call__-expanded"><a name="L59"></a><tt class="py-lineno"> 59</tt>  <tt class="py-line">        <tt class="py-name">text</tt> <tt class="py-op">=</tt> <tt class="py-name">text</tt><tt class="py-op">.</tt><tt class="py-name">lower</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L60"></a><tt class="py-lineno"> 60</tt>  <tt class="py-line">        <tt class="py-name">text</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-7" class="py-name" targets="Method tagger.tagger.Reader.preprocess()=tagger.tagger.Reader-class.html#preprocess,Method tagger.tagger.Stemmer.preprocess()=tagger.tagger.Stemmer-class.html#preprocess"><a title="tagger.tagger.Reader.preprocess
tagger.tagger.Stemmer.preprocess" class="py-name" href="#" onclick="return doclink('link-7', 'preprocess', 'link-7');">preprocess</a></tt><tt class="py-op">(</tt><tt class="py-name">text</tt><tt class="py-op">)</tt> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt>  <tt class="py-line">        <tt class="py-name">words</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-8" class="py-name" targets="Variable tagger.tagger.Reader.match_words=tagger.tagger.Reader-class.html#match_words"><a title="tagger.tagger.Reader.match_words" class="py-name" href="#" onclick="return doclink('link-8', 'match_words', 'link-8');">match_words</a></tt><tt class="py-op">.</tt><tt class="py-name">findall</tt><tt class="py-op">(</tt><tt class="py-name">text</tt><tt class="py-op">)</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt>  <tt class="py-line">        <tt class="py-name">tags</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt id="link-9" class="py-name" targets="Class tagger.tagger.Tag=tagger.tagger.Tag-class.html"><a title="tagger.tagger.Tag" class="py-name" href="#" onclick="return doclink('link-9', 'Tag', 'link-9');">Tag</a></tt><tt class="py-op">(</tt><tt class="py-name">w</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">w</tt> <tt class="py-keyword">in</tt> <tt class="py-name">words</tt><tt class="py-op">]</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">tags</tt> </tt>
</div></div><a name="L64"></a><tt class="py-lineno"> 64</tt>  <tt class="py-line"> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt>  <tt class="py-line"> </tt>
<a name="FastStemmer"></a><div id="FastStemmer-def"><a name="L66"></a><tt class="py-lineno"> 66</tt> <a class="py-toggle" href="#" id="FastStemmer-toggle" onclick="return toggle('FastStemmer');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="tagger.extras.FastStemmer-class.html">FastStemmer</a><tt class="py-op">(</tt><tt class="py-base-class">Stemmer</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="FastStemmer-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="FastStemmer-expanded"><a name="L67"></a><tt class="py-lineno"> 67</tt>  <tt class="py-line">    <tt class="py-docstring">'''</tt> </tt>
<a name="L68"></a><tt class="py-lineno"> 68</tt>  <tt class="py-line"><tt class="py-docstring">    Stemmer subclass that uses a much faster, but less correct algorithm</tt> </tt>
<a name="L69"></a><tt class="py-lineno"> 69</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L70"></a><tt class="py-lineno"> 70</tt>  <tt class="py-line"> </tt>
<a name="FastStemmer.__init__"></a><div id="FastStemmer.__init__-def"><a name="L71"></a><tt class="py-lineno"> 71</tt> <a class="py-toggle" href="#" id="FastStemmer.__init__-toggle" onclick="return toggle('FastStemmer.__init__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="tagger.extras.FastStemmer-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="FastStemmer.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="FastStemmer.__init__-expanded"><a name="L72"></a><tt class="py-lineno"> 72</tt>  <tt class="py-line">        <tt class="py-keyword">from</tt> <tt class="py-name">stemming</tt> <tt class="py-keyword">import</tt> <tt class="py-name">porter</tt> </tt>
<a name="L73"></a><tt class="py-lineno"> 73</tt>  <tt class="py-line">         </tt>
<a name="L74"></a><tt class="py-lineno"> 74</tt>  <tt class="py-line">        <tt id="link-10" class="py-name" targets="Class tagger.tagger.Stemmer=tagger.tagger.Stemmer-class.html"><a title="tagger.tagger.Stemmer" class="py-name" href="#" onclick="return doclink('link-10', 'Stemmer', 'link-10');">Stemmer</a></tt><tt class="py-op">.</tt><tt id="link-11" class="py-name" targets="Method tagger.extras.FastStemmer.__init__()=tagger.extras.FastStemmer-class.html#__init__,Method tagger.tagger.MultiTag.__init__()=tagger.tagger.MultiTag-class.html#__init__,Method tagger.tagger.Rater.__init__()=tagger.tagger.Rater-class.html#__init__,Method tagger.tagger.Stemmer.__init__()=tagger.tagger.Stemmer-class.html#__init__,Method tagger.tagger.Tag.__init__()=tagger.tagger.Tag-class.html#__init__,Method tagger.tagger.Tagger.__init__()=tagger.tagger.Tagger-class.html#__init__"><a title="tagger.extras.FastStemmer.__init__
tagger.tagger.MultiTag.__init__
tagger.tagger.Rater.__init__
tagger.tagger.Stemmer.__init__
tagger.tagger.Tag.__init__
tagger.tagger.Tagger.__init__" class="py-name" href="#" onclick="return doclink('link-11', '__init__', 'link-11');">__init__</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">porter</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L75"></a><tt class="py-lineno"> 75</tt>  <tt class="py-line"> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt>  <tt class="py-line"> </tt>
<a name="NaiveRater"></a><div id="NaiveRater-def"><a name="L77"></a><tt class="py-lineno"> 77</tt> <a class="py-toggle" href="#" id="NaiveRater-toggle" onclick="return toggle('NaiveRater');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="tagger.extras.NaiveRater-class.html">NaiveRater</a><tt class="py-op">(</tt><tt class="py-base-class">Rater</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="NaiveRater-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="NaiveRater-expanded"><a name="L78"></a><tt class="py-lineno"> 78</tt>  <tt class="py-line">    <tt class="py-docstring">'''</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt>  <tt class="py-line"><tt class="py-docstring">    Rater subclass that jusk ranks single-word tags by their frequency and</tt> </tt>
<a name="L80"></a><tt class="py-lineno"> 80</tt>  <tt class="py-line"><tt class="py-docstring">    weight</tt> </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt>  <tt class="py-line"> </tt>
<a name="NaiveRater.__call__"></a><div id="NaiveRater.__call__-def"><a name="L83"></a><tt class="py-lineno"> 83</tt> <a class="py-toggle" href="#" id="NaiveRater.__call__-toggle" onclick="return toggle('NaiveRater.__call__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="tagger.extras.NaiveRater-class.html#__call__">__call__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">tags</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="NaiveRater.__call__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="NaiveRater.__call__-expanded"><a name="L84"></a><tt class="py-lineno"> 84</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-12" class="py-name" targets="Method tagger.tagger.Rater.rate_tags()=tagger.tagger.Rater-class.html#rate_tags"><a title="tagger.tagger.Rater.rate_tags" class="py-name" href="#" onclick="return doclink('link-12', 'rate_tags', 'link-12');">rate_tags</a></tt><tt class="py-op">(</tt><tt class="py-name">tags</tt><tt class="py-op">)</tt> </tt>
<a name="L85"></a><tt class="py-lineno"> 85</tt>  <tt class="py-line">        <tt class="py-comment"># we still get rid of one-character tags and stopwords</tt> </tt>
<a name="L86"></a><tt class="py-lineno"> 86</tt>  <tt class="py-line">        <tt class="py-name">unique_tags</tt> <tt class="py-op">=</tt> <tt class="py-name">set</tt><tt class="py-op">(</tt><tt class="py-name">t</tt> <tt class="py-keyword">for</tt> <tt class="py-name">t</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tags</tt> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt>  <tt class="py-line">                          <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">t</tt><tt class="py-op">.</tt><tt class="py-name">string</tt><tt class="py-op">)</tt> <tt class="py-op">&gt;</tt> <tt class="py-number">1</tt> <tt class="py-keyword">and</tt> <tt class="py-name">t</tt><tt class="py-op">.</tt><tt class="py-name">rating</tt> <tt class="py-op">&gt;</tt> <tt class="py-number">0.0</tt><tt class="py-op">)</tt> </tt>
<a name="L88"></a><tt class="py-lineno"> 88</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">sorted</tt><tt class="py-op">(</tt><tt class="py-name">unique_tags</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L89"></a><tt class="py-lineno"> 89</tt>  <tt class="py-line">     </tt>
<a name="L90"></a><tt class="py-lineno"> 90</tt>  <tt class="py-line">         </tt>
<a name="build_dict_from_nltk"></a><div id="build_dict_from_nltk-def"><a name="L91"></a><tt class="py-lineno"> 91</tt> <a class="py-toggle" href="#" id="build_dict_from_nltk-toggle" onclick="return toggle('build_dict_from_nltk');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="tagger.extras-module.html#build_dict_from_nltk">build_dict_from_nltk</a><tt class="py-op">(</tt><tt class="py-param">output_file</tt><tt class="py-op">,</tt> <tt class="py-param">corpus</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-param">stopwords</tt><tt class="py-op">=</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> </tt>
<a name="L92"></a><tt class="py-lineno"> 92</tt>  <tt class="py-line">                         <tt class="py-param">stemmer</tt><tt class="py-op">=</tt><tt id="link-13" class="py-name"><a title="tagger.tagger.Stemmer" class="py-name" href="#" onclick="return doclink('link-13', 'Stemmer', 'link-10');">Stemmer</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-param">measure</tt><tt class="py-op">=</tt><tt class="py-string">'IDF'</tt><tt class="py-op">,</tt> <tt class="py-param">verbose</tt><tt class="py-op">=</tt><tt class="py-name">False</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="build_dict_from_nltk-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="build_dict_from_nltk-expanded"><a name="L93"></a><tt class="py-lineno"> 93</tt>  <tt class="py-line">    <tt class="py-docstring">'''</tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt>  <tt class="py-line"><tt class="py-docstring">    @param output_file: the name of the file where the dictionary should be</tt> </tt>
<a name="L95"></a><tt class="py-lineno"> 95</tt>  <tt class="py-line"><tt class="py-docstring">                        saved</tt> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt>  <tt class="py-line"><tt class="py-docstring">    @param corpus:      the NLTK corpus to use (defaults to nltk.corpus.reuters)</tt> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt>  <tt class="py-line"><tt class="py-docstring">    @param stopwords:   a list of (not stemmed) stopwords (defaults to</tt> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt>  <tt class="py-line"><tt class="py-docstring">                        nltk.corpus.reuters.words('stopwords'))</tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt>  <tt class="py-line"><tt class="py-docstring">    @param stemmer:     the L{Stemmer} object to be used</tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt>  <tt class="py-line"><tt class="py-docstring">    @param measure:     the measure used to compute the weights ('IDF'</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt>  <tt class="py-line"><tt class="py-docstring">                        i.e. 'inverse document frequency' or 'ICF' i.e.</tt> </tt>
<a name="L102"></a><tt class="py-lineno">102</tt>  <tt class="py-line"><tt class="py-docstring">                        'inverse collection frequency'; defaults to 'IDF')</tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt>  <tt class="py-line"><tt class="py-docstring">    @param verbose:     whether information on the progress should be printed</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt>  <tt class="py-line"><tt class="py-docstring">                        on screen</tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt>  <tt class="py-line"><tt class="py-docstring">    '''</tt> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt>  <tt class="py-line">     </tt>
<a name="L107"></a><tt class="py-lineno">107</tt>  <tt class="py-line">    <tt class="py-keyword">from</tt> <tt id="link-14" class="py-name" targets="Module tagger.build_dict=tagger.build_dict-module.html,Function tagger.build_dict.build_dict()=tagger.build_dict-module.html#build_dict"><a title="tagger.build_dict
tagger.build_dict.build_dict" class="py-name" href="#" onclick="return doclink('link-14', 'build_dict', 'link-14');">build_dict</a></tt> <tt class="py-keyword">import</tt> <tt id="link-15" class="py-name"><a title="tagger.build_dict
tagger.build_dict.build_dict" class="py-name" href="#" onclick="return doclink('link-15', 'build_dict', 'link-14');">build_dict</a></tt> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt>  <tt class="py-line">    <tt class="py-keyword">import</tt> <tt class="py-name">nltk</tt> </tt>
<a name="L109"></a><tt class="py-lineno">109</tt>  <tt class="py-line">    <tt class="py-keyword">import</tt> <tt class="py-name">pickle</tt> </tt>
<a name="L110"></a><tt class="py-lineno">110</tt>  <tt class="py-line"> </tt>
<a name="L111"></a><tt class="py-lineno">111</tt>  <tt class="py-line">    <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-op">(</tt><tt class="py-name">corpus</tt> <tt class="py-keyword">and</tt> <tt class="py-name">stopwords</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L112"></a><tt class="py-lineno">112</tt>  <tt class="py-line">        <tt class="py-name">nltk</tt><tt class="py-op">.</tt><tt class="py-name">download</tt><tt class="py-op">(</tt><tt class="py-string">'reuters'</tt><tt class="py-op">)</tt> </tt>
<a name="L113"></a><tt class="py-lineno">113</tt>  <tt class="py-line">         </tt>
<a name="L114"></a><tt class="py-lineno">114</tt>  <tt class="py-line">    <tt class="py-name">corpus</tt> <tt class="py-op">=</tt> <tt class="py-name">corpus</tt> <tt class="py-keyword">or</tt> <tt class="py-name">nltk</tt><tt class="py-op">.</tt><tt class="py-name">corpus</tt><tt class="py-op">.</tt><tt class="py-name">reuters</tt> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt>  <tt class="py-line">    <tt class="py-name">stopwords</tt> <tt class="py-op">=</tt> <tt class="py-name">stopwords</tt> <tt class="py-keyword">or</tt> <tt class="py-name">nltk</tt><tt class="py-op">.</tt><tt class="py-name">corpus</tt><tt class="py-op">.</tt><tt class="py-name">reuters</tt><tt class="py-op">.</tt><tt class="py-name">words</tt><tt class="py-op">(</tt><tt class="py-string">'stopwords'</tt><tt class="py-op">)</tt> </tt>
<a name="L116"></a><tt class="py-lineno">116</tt>  <tt class="py-line"> </tt>
<a name="L117"></a><tt class="py-lineno">117</tt>  <tt class="py-line">    <tt class="py-name">corpus_list</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L118"></a><tt class="py-lineno">118</tt>  <tt class="py-line">     </tt>
<a name="L119"></a><tt class="py-lineno">119</tt>  <tt class="py-line">    <tt class="py-keyword">if</tt> <tt class="py-name">verbose</tt><tt class="py-op">:</tt> <tt class="py-keyword">print</tt> <tt class="py-string">'Processing corpus...'</tt> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt>  <tt class="py-line">    <tt class="py-keyword">for</tt> <tt class="py-name">file</tt> <tt class="py-keyword">in</tt> <tt class="py-name">corpus</tt><tt class="py-op">.</tt><tt class="py-name">fileids</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt>  <tt class="py-line">        <tt class="py-name">doc</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">stemmer</tt><tt class="py-op">(</tt><tt id="link-16" class="py-name"><a title="tagger.tagger.Tag" class="py-name" href="#" onclick="return doclink('link-16', 'Tag', 'link-9');">Tag</a></tt><tt class="py-op">(</tt><tt class="py-name">w</tt><tt class="py-op">.</tt><tt class="py-name">lower</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">stem</tt> <tt class="py-keyword">for</tt> <tt class="py-name">w</tt> <tt class="py-keyword">in</tt> <tt class="py-name">corpus</tt><tt class="py-op">.</tt><tt class="py-name">words</tt><tt class="py-op">(</tt><tt class="py-name">file</tt><tt class="py-op">)</tt> </tt>
<a name="L122"></a><tt class="py-lineno">122</tt>  <tt class="py-line">               <tt class="py-keyword">if</tt> <tt class="py-name">w</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt class="py-name">isalpha</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">]</tt> </tt>
<a name="L123"></a><tt class="py-lineno">123</tt>  <tt class="py-line">        <tt class="py-name">corpus_list</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">doc</tt><tt class="py-op">)</tt> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt>  <tt class="py-line"> </tt>
<a name="L125"></a><tt class="py-lineno">125</tt>  <tt class="py-line">    <tt class="py-keyword">if</tt> <tt class="py-name">verbose</tt><tt class="py-op">:</tt> <tt class="py-keyword">print</tt> <tt class="py-string">'Processing stopwords...'</tt> </tt>
<a name="L126"></a><tt class="py-lineno">126</tt>  <tt class="py-line">    <tt class="py-name">stopwords</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">stemmer</tt><tt class="py-op">(</tt><tt id="link-17" class="py-name"><a title="tagger.tagger.Tag" class="py-name" href="#" onclick="return doclink('link-17', 'Tag', 'link-9');">Tag</a></tt><tt class="py-op">(</tt><tt class="py-name">w</tt><tt class="py-op">.</tt><tt class="py-name">lower</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">stem</tt> <tt class="py-keyword">for</tt> <tt class="py-name">w</tt> <tt class="py-keyword">in</tt> <tt class="py-name">stopwords</tt><tt class="py-op">]</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt>  <tt class="py-line"> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt>  <tt class="py-line">    <tt class="py-keyword">if</tt> <tt class="py-name">verbose</tt><tt class="py-op">:</tt> <tt class="py-keyword">print</tt> <tt class="py-string">'Building dictionary... '</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt>  <tt class="py-line">    <tt class="py-name">dictionary</tt> <tt class="py-op">=</tt> <tt id="link-18" class="py-name"><a title="tagger.build_dict
tagger.build_dict.build_dict" class="py-name" href="#" onclick="return doclink('link-18', 'build_dict', 'link-14');">build_dict</a></tt><tt class="py-op">(</tt><tt class="py-name">corpus_list</tt><tt class="py-op">,</tt> <tt class="py-name">stopwords</tt><tt class="py-op">,</tt> <tt class="py-name">measure</tt><tt class="py-op">)</tt> </tt>
<a name="L130"></a><tt class="py-lineno">130</tt>  <tt class="py-line">    <tt class="py-keyword">with</tt> <tt class="py-name">open</tt><tt class="py-op">(</tt><tt class="py-name">output_file</tt><tt class="py-op">,</tt> <tt class="py-string">'wb'</tt><tt class="py-op">)</tt> <tt class="py-keyword">as</tt> <tt class="py-name">out</tt><tt class="py-op">:</tt> </tt>
<a name="L131"></a><tt class="py-lineno">131</tt>  <tt class="py-line">        <tt class="py-name">pickle</tt><tt class="py-op">.</tt><tt class="py-name">dump</tt><tt class="py-op">(</tt><tt class="py-name">dictionary</tt><tt class="py-op">,</tt> <tt class="py-name">out</tt><tt class="py-op">,</tt> <tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">)</tt> </tt>
</div><a name="L132"></a><tt class="py-lineno">132</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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